准确的蛋白质pKa预测与物理有机化学引导的3D蛋白质表示表示
Siyuan Liu1, Qi Yang1, Long Zhang1
1Center of Basic Molecular Science, Department of Chemistry, Tsinghua University, Beijing 100084, China.
Journal of chemical information and modeling
|May 23, 2024
概括
预测蛋白质pKa值对于理解蛋白质结构和功能至关重要. 这项研究引入了一种快速物理有机方法 (P-SPOC),用于准确的蛋白质pKa预测,即使是结构不明的蛋白质.
科学领域:
- 生物化学 生物化学
- 计算生物学 计算生物学
- 结构生物学 结构生物学
背景情况:
- 蛋白质pKa值是影响蛋白质结构和功能的关键物理化学性质.
- 准确的实验和理论确定蛋白质位点-pKa值存在重大挑战.
研究的目的:
- 开发一个快速和直观的模型来预测蛋白质pKa值.
- 为了提高pKa预测对结构不明的蛋白质的适用性.
主要方法:
- 开发了一种使用蛋白质结构和基于物理-有机参数的表示 (P-SPOC) 的物理有机方法.
- 先进的蛋白质结构预测模型,如AlphaFold2,被整合到缺乏实验3D表示的蛋白质的近似结构中.
主要成果:
- 该P-SPOC模型实现了最先进的预测准确度,平均绝对误差 (MAE) 为0.33 pKa单位.
- 结构预测模型的整合扩大了该模型对未知3D结构的蛋白质的实用性.
结论:
- P-SPOC模型在快速和准确的蛋白质pKa预测方面取得了重大进展.
- 在isyn.luoszgroup.com上提供一个在线预测接口,以促进更广泛的研究社区访问.
相关概念视频
Protein Organization
6.4K
Proteins are polymers of amino acid residues. They are versatile and responsible for different cellular functions, including DNA replication, molecular transport, catalysis, and structural support. Proteins have a hierarchical structure comprising at least three levels of organization: primary, secondary, and tertiary structure. Some large proteins have a quaternary structure where individual protein subunits are linked together.
The primary structure of a protein is its amino acid sequence....
The primary structure of a protein is its amino acid sequence....
6.4K
Physiological Pharmacokinetic Models: Assumption with Protein Binding
41
Physiological models with protein binding in pharmacokinetics offer a sophisticated approach to understanding drug disposition. These models consider drug-protein interactions, enabling them to effectively predict drug concentrations in different organs and tissues. This precision aids in accurate drug dosing, providing a significant advantage over conventional models. A key process within these models is equilibration, which ensures that drug concentrations achieve a steady state within the...
41
Molecular Models
38.2K
Physical models representing molecular architectures of chemical compounds play essential roles in understanding chemistry. The use of molecular models makes it easier to visualize the structures and shapes of atoms and molecules.
38.2K
Conserved Binding Sites
4.2K
Many proteins’ biological role depends on their interactions with their ligands, small molecules that bind to specific locations on the protein known as ligand-binding sites. Ligand-binding sites are often conserved among homologous proteins as these sites are critical for protein function.
Binding sites are often located in large pockets, and if their location on a protein’s surface is unknown, it can be predicted using various approaches. The energetic method computationally...
Binding sites are often located in large pockets, and if their location on a protein’s surface is unknown, it can be predicted using various approaches. The energetic method computationally...
4.2K
Protein-protein Interfaces
12.5K
Many proteins form complexes to carry out their functions, making protein-protein interactions (PPIs) essential for an organism's survival. Most PPIs are stabilized by numerous weak noncovalent chemical forces. The physical shape of the interfaces determines the way two proteins interact. Many globular proteins have closely-matching shapes on their surfaces, which form a large number of weak bonds. Additionally, many PPIs occur between two helices or between a surface cleft and a...
12.5K
Predicting Molecular Geometry
34.3K
VSEPR Theory for Determination of Electron Pair Geometries
34.3K


